Three rings, comprising: a gold ring set with a step-cut emerald within a rectangular border, size

Three rings, comprising: a gold ring set with a step-cut emerald within a rectangular border, size O1/2, stamped 18CT, reverse partially engraved; a ring of wishbone design channel-set with brilliant-cut diamonds, mounted in 18ct gold, size N1/2, British hallmarks; and a citrine and diamond cluster ring mounted in gold, size K, stamped D&W